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Re: Chev smallblock or 4.3 swap into Volvo 240
Posted to Open Discussion Forum on 2/3/1999 3 Replies

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GM systems use non ported vacuum, and a frequency solenoid that by nature bleeds off vaccum to the EGR valve. When energized it directs vacuum TO the valve. This is all PCM controlled. As far as I kno... Login to read more.

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